Recoiler for Hot Rolled Strip

Mandrel of Pay-off Reel and Stress Reel

For very hot rolling 
The mandrel is the crucial portion of very hot rolling rigidity reel for coils&time period Coiling temperature is among 550 to 850ºC&period The mandrel has largely two sorts&colon link wedge kind and double wedge sort&period

Url wedge kind can also be divided into two sorts&colon website link wedge-coupling drive and website link-spline travel&period of time

For website link wedge-coupling variety tension reel&comma the mandrel is largely composed of mandrel human body&comma spreader bar&comma phase&comma hyperlink&comma wedge and spreading cylinder&time period Spreader bar has multistage slopes and segment is supported by multistage wedge&time period Segment is connected with spreader bar by link so segment does not fall off&time period With compression spring in the middle of wedge&comma wedge can firmly speak to section and pyramid surface&period There is a gap amongst the higher area of wedge and phase&comma which can reduce the affect of coil head to mandrel during coiling coil&time period Mandrel entire body is put in on two bearings&interval Electrical power is transmitted by crowned-tooth coupling in the true&interval It is very handy to dismantle&comma and owing to there is no equipment effect in the course of operating&comma mandrel rigidity is enhanced&period It truly is really helpful to handle the dynamic stress&period of time

The spreading basic principle of mandrel&colon spreader bar moves inside of mandrel entire body in axial path dreivern by hydraulic cylinder&comma the slant of sperader bar pushes the wedge inside of radial gap of mandrel entire body to shift outward&period of time The wedge floor pushes section to expand outward&time period Wedge diameter will expand&interval Soon after coiling coils&comma spreader bar moves in the opposite course pushed by hydraulic cylinder&comma and pulls section to shrink by way of url&interval Wedge moves inward and mandrel diameter becomes smaller to discharge condition&period of time Then you can begin to discharge coil&period

For the two kinds of website link wedge-coupling travel and link wedge-spline drive&comma the mandrel buildings and ideas are almost identical and the primary big difference is drive variety of mandrel&interval For link wedge-spline generate kind&comma relationship between mandrel and major transmission instances is spline&comma i&periode&time period insert type&period of time When mouting and dismantling&comma mandrel can be straight inserted or pulled out of the primary transmission cases to achieve the quick alternative&time period
The major driving motor drives gear shaft rotation by way of the intermediate shaft&interval The gear shaft dirves massive gear rotation&comma and the big equipment drives mandrel rotation by way of spline&period

For the double wedge sort tension reel&comma the mandrel is mainly composed of mandrel physique&comma spreader bar&comma section&comma spreader wedge&comma buffer wege and hyd&interval Cylinder&interval

The spreading basic principle of double wedge type mandrel&colon hyd&time period Cylinder tends to make spreader bar transfer again and forth in axial route and the wedge transfer in radical course&time period So the segment becomes large&period of time T-hook on spreader bar pulls wedge back again and the hook outside the wedge pulls section again&period of time This will make the manderel little&period With spline connectiion for electricity transmission device&comma mandrel can be quickly replaced&period Cooling drinking water channel inside of the mandrel&comma so cooling effect is excellent&period Lubricant can be injected by automobile and guide variety&comma so it can decrease areas wear&time period

Shell out-off reel and rigidity reel for cold rolling coils are utilized in chilly rolling creation line or spend-off when acid pickling&commagalvanization&commaannealing&commashear&commacoating or coil tension in out enable&period of time
Chilly rolling mandrel is the important part of pay-off reel and rigidity reel&period of time According to various structure&comma it has beam wedge type&comma pyramid axis sort&comma pyramid sleeve variety&comma wedge type&comma radial direction hydraulic cylinder type&comma etc&period of time Or merely&comma open type and shut variety&period of time The close sort mandrel is a near circle CZPT hole in the area soon after expanding&periodit is suitable for coiling thin strip steel&interval The open type mandrel signifies there is a gap amongst segments after mandrel increasing&comma suitable for coiling thicker strip metal&interval
For cold rolling
Pay out-off reel and rigidity reel for chilly rolling coils are employed in cold rolling generation line or pay-off when acid pickling&comma gavanization&comma annealing&comma shear&comma coating or coil pressure in outlet&period

Chilly rolling mandrel is the crucial elements of spend-off reel&stress reel&period of time According to various construction&comma it has beam wedge variety&comma pyramid axis sort&comma pyramid sleeve sort&comma wedge sort&comma radial path hydraulic cylinder variety&comma ect&interval Or simply&comma open up variety and close sort&time period The near variety mandrel is a shut circle CZPT gap in the surface right after growing&interval It is appropriate for coiling thin strip steel&period The open up sort mandrel means there are a gap in between phase after mandrel growing&comma ideal for coiling thicker strip steel&period of time

The beam wedge kind mandrel is primarily composed of the main shaft&comma expanding core&comma section&comma axial direction wedge&comma radial direction wedge and spreading cylinder&comma and many others&period of time There are two types of construction&colon with jaw or CZPT jaw&period of time The mandrel with jaw is utilized for coiling thicker strip metal&interval It can also be established with metal sleeve or paper sleeve to coil with belt wrapper&time period The mandrel CZPT jaw is employed for coiling skinny strip steel by belt wrapper&period of time

The mandrel will move alongside axial course pushed by the growing main & wedge block&comma through relative sliding between the wedge block and section&comma swelling and shrinking will occur in radial route&comma reset by spring&period of time

The pyramidal axis kind mandrel is divided into tapper type and back again taper type according to the tilting direction of axis slope&interval This mandrel has simple framework &commaless elements&comma big major shaft part and high power &periodSo it can bear huge tension&comma not only coiling &commabut also uncoiling&period There are two types of structure&colon with jaw or CZPT jaw &periodit’s largely consisted of the pyramid axis&comma section&comma hollow sleeve and spreading cylinder&comma and so forth&period

Presently&comma the back taper sort mandrel is the most well-liked&period of time The oil goes into the cylinder by means of a rod cavity&interval The cylinder pulls the pyramidal shaft backward along axial direction and press phase to expand outdoors&comma so the drum is expanded&interval Pyramidal axis moves again ward along axial path&comma and section is pulled back by the T-crucial&comma hence the mandrel is shrinked&period

Recoiler for Hot Rolled Strip